Quote:
Originally Posted by Dave Gantz
Hi Mike, just wondering, why?
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I run US Gear, when I asked what they like to see in gear oil, they said GL-5 is the key ingredient drag racing.
Valvoline High Performance gear oil is GL-5
Valvoline regular gear oil is not.
Here's a mention in dragzine confirming they're recommendation. No technical terms though, I couldn't find anything other than this.
I just use $4.97 Valvoline GL-5 80w 90. Ford 9" Strange chunk, I've had several different gear ratios in. 3.90, 4.10, 4.33. 4.56, 5.00, 5.29
3200 lb 23 n/a sbc 1.27 60 ft
https://www.dragzine.com/news/lubric...r-in-gear-oil/